Mold-plunger.



Original application filed January 14,

ALEXANDER KINNEAR, or TOLEDO, OHIO.

MOLD-PLUNGER.

ween e.

0 all whom it may concern;

Be it known that I, A inxnnnnnKiNnnAn, a'citizen of the Un ted States, residing at Toledo, in the county of Lucas and State of Ohio, have invented certain new and useful Improvements in lvifolcl-Plungers,'of which the following is a specification.

The machine Whichis the subject of present invention is designed more particu larly for producingclay pots employed in glass making.

The present application is a division of the application filed January 14:, 1913, Serial No. M2005, and the subject matter of this divisional application relates more particuarly to the plunger Whichcooperates with the mold to formthe pots, a plunger being provided embodying" certain novel features ,of constructionto be hereinafter described and claimed; V In the accompanying drawing forming a part of this specification, Figured is; an

elevation oftheplunger, and Fig. 2 "is a vertical sectionthereof. V -j Referring specifically to the drawing 5 dc notes a plunger adapted to enter a mold 6 to.

shape clay or other material therein into the article to be produced. The plunger 5 has a covering 7 of skin, feltor other air-absorb ent material, the same fitting snugly over the plunger like a glove andbeing of any suitable thickness. This covering permits the escape of air When the plunger descends l I into the mass. of clay in the mold. The air,

therefore, Will not get caught between the surface of the plunger and the adjacent clay .to form blisters. The coveringbeing porous the Specification of ietters'latent. v .Patgntagdl Sgpf, 7 i

1913, SeriaI no. 742,004. Divided and this application filed October e, 1913. Serial No.'793,674.

absorbs the air and permits it to escape. Without the coveringQit would also be difficult to Withdraw the plunger on account of the suction and the sticking of the clay to the plunger, but with the covering, the

plunger caneasily'be withdrawn by slightly Warming the same, the covering remaining in the molded pot. By leaving the covering remain in the pot, the same helps to support the sides thereof and prevents the latter 1 from drying too fast which is liable to cause cracks in theclay. Furthermore, the coveringlhelps to keep the outside surface of the clay from drying too fast for the interior, and if necessary, the covering maybe dampened, and it may be readily pulled outofthe pot' at anytime Without danger of injury theretog L I claim:

- '1. A mold plunger having a covering of porous material, said covering being air absorbent and free to slip off the plunger to remain on the molded article when said. plunger is retracted.

' 2. A mold plunger havinga covering of porous material frictionally' held thereon,

said covering being air absorbent and free to slip off the plunger to remain on the molded article when the plunger is Withdrawn. p

In testimony whereof I afiix my slgnature in presence of two Witnesses.

ALEXANDER KINNEARQ Witnesses: I

ALEXANDER J. KINNEAR, Jr., EnsmnnI-IqPorrnn.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

